Krizhanovskii, D.N., Whittaker, D.M., Bradley, R.A. et al. (8 more authors) (2010) Effect of interactions on vortices in a nonequilibrium polariton condensate. Physical Review Letters , 104 (12). Art no.126402 . ISSN 0031-9007
Abstract
We demonstrate the creation of vortices in a macroscopically occupied polariton state formed in a semiconductor microcavity. A weak external laser beam carrying orbital angular momentum (OAM) is used to imprint a vortex on the condensate arising from the polariton optical parametric oscillator (OPO). The vortex core radius is found to decrease with increasing pump power, and is determined by polariton-polariton interactions. As a result of OAM conservation in the parametric scattering process, the excitation consists of a vortex in the signal and a corresponding antivortex in the idler of the OPO. The experimental results are in good agreement with a theoretical model of a vortex in the polariton OPO.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2010 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review Letters. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Bose-Einstein Condensation; Semiconductor Microcavities |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Miss Anthea Tucker |
Date Deposited: | 14 May 2010 09:03 |
Last Modified: | 08 Feb 2013 17:00 |
Published Version: | http://dx.doi.org/10.1103/PhysRevLett.104.126402 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevLett.104.126402 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:10826 |